You can download the latest version of the app from https://itch.io/app. The download button leads to a page that will attempt to detect your current platform and redirect you to the appropriate download.
Additionally, there are .deb and .rpm repositories, and AUR packages that you might miss out on if you rely on the main download page. To learn more about these, please refer to the following pages:
Release notes for all versions are available on GitHub.
On macOS and Windows, the app automatically updates itself, notifying you when it's ready to be restarted, with a list of changes:
On Linux, you currently have to download and install a newer package yourself, except if you're using our .deb or .rpm repository, although we are working on an alternative
You can check the currently running version of the app by hovering the
logo in the top-left corner, or by opening the user menu (bottom-left). Older
versions of the app only show it in the
Help menu, which you can make appear
by pressing the Alt key, on platforms where it's hidden by default.